FIRST OBSERVATION OF (100) AND (211) FACETS ON HE-3 CRYSTALS

Authors
WAGNER R STEEL SC ANDREEVA OA JOCHEMSEN R FROSSATI G
Citation
R. Wagner et al., FIRST OBSERVATION OF (100) AND (211) FACETS ON HE-3 CRYSTALS, Physical review letters, 76(2), 1996, pp. 263-266
Citations number
19
Categorie Soggetti
Physics
Journal title
Physical review letters → ACNP
ISSN journal
00319007
Volume
76
Issue
2
Year of publication
1996
Pages
263 - 266
Database
ISI
SICI code
0031-9007(1996)76:2<263:FOO(A(>2.0.ZU;2-P
Abstract
Images of He-3 crystals at temperatures down to 1 mK have been obtaine d by means of a new type of optical cryostat, relying on the use of a compact charge-coupled device camera inside a nuclear demagnetization refrigerator. During growth from the superfluid He-3-A phase, some cry stals have shown second and third roughening, i.e., the presence of (1 00) and (211) facets in addition to the (110) facets previously observ ed. The presence of these new facets is in accordance with the Kosterl itz-Thouless theory of the roughening transition.